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| Ion Accumulation | ||||||||||
| This project is finished. The information about it serves documentation purposes. | ||||||||||
- Publications - Contact |
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 Tasks |
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| A central activity is the determination of an atomic mass in the unit kilogram with the experiment "ion accumulation". The kilogram is the only one of the seven SI base units that is not yet defined by an atomic or fundamental constant of physics, but by a material artefact, the international prototype of the kilogram. Besides of other approaches, such as the Watt balance or the determination of the Avogadro constant, the experiment "ion accumulation" is aimed to link the kilogram to an atomic mass with a relative uncertainty of about 10-8. |
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© Physikalisch-Technische Bundesanstalt Erstellt am: 27.02.2004, letzte Änderung: 15.03.2008, AG 1.22 |
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